$\displaystyle cos^2 x = 1/16 $

I worked 4 solutions out to be 76, 104, 256 and 294 degrees. Are these correct?

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- Feb 10th 2009, 02:10 PMdb5vry[SOLVED] simple trigonometric equation
$\displaystyle cos^2 x = 1/16 $

I worked 4 solutions out to be 76, 104, 256 and 294 degrees. Are these correct? - Feb 10th 2009, 02:23 PMSoroban
Hello, db5vry!

If they are limited to the interval (0°, 360°) and rounded to the nearest whole degree,

. . yes . . . they're correct!